# Support

**URL:** https://discourse.slicer.org/c/support/11.md?page=3

[Latest](https://discourse.slicer.org/latest.md) · [Categories](https://discourse.slicer.org/categories.md) · [Tags](https://discourse.slicer.org/tags.md)

**Page:** 4

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## [Asking for more mask save format](https://discourse.slicer.org/t/asking-for-more-mask-save-format/47709)

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**Author:** [@zhousy5310](https://discourse.slicer.org/u/zhousy5310)\
**Replies:** 8\
**Last updated:** [July 24, 2026, 6:29pm UTC](https://discourse.slicer.org/t/asking-for-more-mask-save-format/47709 "2026-07-24T18:29:56Z")

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Hi all, May i ask why does 3D slicer only support output the segmentation results as these 4: .seg.nrrd; .seg.nhdr; .nrrd; .nhdr. Is it possible, without using plugins, to save the segmentation results separately into …

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## [New to SlicerBiomech - How to measure Cortical Area of Long Bone](https://discourse.slicer.org/t/new-to-slicerbiomech-how-to-measure-cortical-area-of-long-bone/47728)

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**Author:** [@rjgilmour](https://discourse.slicer.org/u/rjgilmour)\
**Replies:** 0\
**Last updated:** [July 23, 2026, 4:40pm UTC](https://discourse.slicer.org/t/new-to-slicerbiomech-how-to-measure-cortical-area-of-long-bone/47728 "2026-07-23T16:40:19Z")

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Hi all, I’m new to both Slicer and the SlicerBiomech and SegmentGeometry extensions. I’m hoping to calculate cortical and medullary area of long bone cross sections, in addition to total area. Does anyone know if this e…

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## [SlicerFab doesnt work properly in 5.0.2](https://discourse.slicer.org/t/slicerfab-doesnt-work-properly-in-5-0-2/24001)

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**Author:** [@Esteban\_Barreiro](https://discourse.slicer.org/u/Esteban_Barreiro)\
**Replies:** 4\
**Last updated:** [July 23, 2026, 2:43pm UTC](https://discourse.slicer.org/t/slicerfab-doesnt-work-properly-in-5-0-2/24001 "2026-07-23T14:43:32Z")

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Hi there! I have trouble using SlicerFab Module in 5.0.2 The bitmaps generated doesnt start from the first slice as it should, it just stays at the top and create slices from there. It was working fine in 5.1 (last week) …

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## [Is there a way to export in 3mf file format?](https://discourse.slicer.org/t/is-there-a-way-to-export-in-3mf-file-format/46130)

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**Author:** [@HelloAll](https://discourse.slicer.org/u/HelloAll)\
**Replies:** 7\
**Last updated:** [July 23, 2026, 1:41pm UTC](https://discourse.slicer.org/t/is-there-a-way-to-export-in-3mf-file-format/46130 "2026-07-23T13:41:14Z")

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Hi. I’m new to 3D Slicer. Is there a way to export files in 3mf format to make printing different segments with different colors easier?

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## [PyTorch not working on Intel(R) Core(TM) Ultra 7 155H](https://discourse.slicer.org/t/pytorch-not-working-on-intel-r-core-tm-ultra-7-155h/47724)

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**Author:** [@Esteban\_Barreiro](https://discourse.slicer.org/u/Esteban_Barreiro)\
**Replies:** 0\
**Last updated:** [July 23, 2026, 12:48pm UTC](https://discourse.slicer.org/t/pytorch-not-working-on-intel-r-core-tm-ultra-7-155h/47724 "2026-07-23T12:48:39Z")

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Hi community! I can’t run Dental Segmentator on an Intel(R) Core™ Ultra 7 155H, on Slicer v 5.8.1, due to an error on Torch, I have already tried all the troubleshooting and it still not working. Does anyone solve this…

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## [Pytorch extension causes crash (Slicer 5.12.2 on Ubuntu 22.04)](https://discourse.slicer.org/t/pytorch-extension-causes-crash-slicer-5-12-2-on-ubuntu-22-04/47710)

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**Author:** [@shai-ikko](https://discourse.slicer.org/u/shai-ikko)\
**Replies:** 5\
**Last updated:** [July 23, 2026, 8:58am UTC](https://discourse.slicer.org/t/pytorch-extension-causes-crash-slicer-5-12-2-on-ubuntu-22-04/47710 "2026-07-23T08:58:41Z")

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Hi, I’m having trouble with the PyTorch extension. On a fresh Slicer 5.12.2 installation, I install the extension, open it, and tell it to install pytorch using the default (automatic) backend. The installation supposed…

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## [Multi slice variable intensity threshold (Grow from seeds)](https://discourse.slicer.org/t/multi-slice-variable-intensity-threshold-grow-from-seeds/47661)

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**Author:** [@Sanjib\_Gurung](https://discourse.slicer.org/u/Sanjib_Gurung)\
**Replies:** 1\
**Last updated:** [July 22, 2026, 2:24am UTC](https://discourse.slicer.org/t/multi-slice-variable-intensity-threshold-grow-from-seeds/47661 "2026-07-22T02:24:15Z")

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Hi, I frequently use Grow from Seeds to generate 3D blood pool models from cardiovascular MRI and CT DICOM images. In these datasets, the blood pool intensity (or Hounsfield Units in CT) often varies across different s…

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## [Errores. No funciona nada](https://discourse.slicer.org/t/errores-no-funciona-nada/47706)

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**Author:** [@Gonzalo\_Rossel](https://discourse.slicer.org/u/Gonzalo_Rossel)\
**Replies:** 1\
**Last updated:** [July 21, 2026, 5:54pm UTC](https://discourse.slicer.org/t/errores-no-funciona-nada/47706 "2026-07-21T17:54:33Z")

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Problem report for 3D Slicer 5.12.1 win-amd64: \[please describe expectedand actual behavior\] \[DEBUG\]\[Qt\] 20.07.2026 22:50:48 (unknown:0) - Session start time …: 20260720\_225048 \[DEBUG\]\[Qt\] 20.07.2026 22:50:48 (unknow…

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## [PyTomography extension is not compatible with 3D Slicer 5.12.2](https://discourse.slicer.org/t/pytomography-extension-is-not-compatible-with-3d-slicer-5-12-2/47702)

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**Author:** [@macp970617](https://discourse.slicer.org/u/macp970617)\
**Replies:** 0\
**Last updated:** [July 21, 2026, 2:37pm UTC](https://discourse.slicer.org/t/pytomography-extension-is-not-compatible-with-3d-slicer-5-12-2/47702 "2026-07-21T14:37:24Z")

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Hello, I am trying to use the PyTomography extension with 3D Slicer version 5.12.2, but the extension does not work. It appears to be incompatible with this version of Slicer. Could you please confirm whether PyTomogra…

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## [Total segmentator module returned with non-zero exit status 1 on to 5.12.1](https://discourse.slicer.org/t/total-segmentator-module-returned-with-non-zero-exit-status-1-on-to-5-12-1/47634)

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**Author:** [@Cromwell](https://discourse.slicer.org/u/Cromwell)\
**Replies:** 6\
**Last updated:** [July 21, 2026, 1:07am UTC](https://discourse.slicer.org/t/total-segmentator-module-returned-with-non-zero-exit-status-1-on-to-5-12-1/47634 "2026-07-21T01:07:02Z")

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I’m having problems with the execution of the total segmentator module, I thought it was something installation, as version 5.10 was running I updated to 5.12.1 but it keeps the same error only with this module. I saw th…

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## [Accidentally moving all markups in a pointList](https://discourse.slicer.org/t/accidentally-moving-all-markups-in-a-pointlist/47685)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 8\
**Last updated:** [July 20, 2026, 3:05pm UTC](https://discourse.slicer.org/t/accidentally-moving-all-markups-in-a-pointlist/47685 "2026-07-20T15:05:57Z")

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This was happening before but I though it was fixed. I can replicate this on MacOS 5.12.1 middle click and drag, moves the entire pointList. interaction is not enabled, so I would consider this a bug.

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## [Segment tooth enamel and pulp from TotalSegmentator tooth-by-tooth](https://discourse.slicer.org/t/segment-tooth-enamel-and-pulp-from-totalsegmentator-tooth-by-tooth/47637)

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**Author:** [@r\_vorup](https://discourse.slicer.org/u/r_vorup)\
**Replies:** 4\
**Last updated:** [July 19, 2026, 6:11pm UTC](https://discourse.slicer.org/t/segment-tooth-enamel-and-pulp-from-totalsegmentator-tooth-by-tooth/47637 "2026-07-19T18:11:58Z")

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Hello all, I have used the TotalSegmentator to segment a CBCT scan of upper and lower jaw, and have gotten each tooth in an individual segment. I now want to split each tooth into dentine and enamel, for them to be 3D p…

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## [Contact information to include within company software catalog](https://discourse.slicer.org/t/contact-information-to-include-within-company-software-catalog/47676)

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**Author:** [@Hguidoc](https://discourse.slicer.org/u/Hguidoc)\
**Replies:** 2\
**Last updated:** [July 18, 2026, 5:24pm UTC](https://discourse.slicer.org/t/contact-information-to-include-within-company-software-catalog/47676 "2026-07-18T17:24:37Z")

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Hello friends! I am the service desk agent and the one in charge at my location of the department. I work for a clinical company, and I want to include the Slicer software for our technicians to work on CB/CT files. As…

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## [Slicer crashes on startup due to SlicerVMTK extension](https://discourse.slicer.org/t/slicer-crashes-on-startup-due-to-slicervmtk-extension/47660)

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**Author:** [@aabrown100-git](https://discourse.slicer.org/u/aabrown100-git)\
**Replies:** 6\
**Last updated:** [July 18, 2026, 3:35pm UTC](https://discourse.slicer.org/t/slicer-crashes-on-startup-due-to-slicervmtk-extension/47660 "2026-07-18T15:35:22Z")

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Issue: On Slicer 5.12.2, Slicer crashes on startup after restarting Slicer following installation of SlicerVMTK. The startup log shows module loading failures in SlicerVMTK due to unresolved dylib dependencies, including…

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## [Fail to Compute Results using TotalSegmentator (returned non-zero exist status 1)](https://discourse.slicer.org/t/fail-to-compute-results-using-totalsegmentator-returned-non-zero-exist-status-1/47404)

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**Author:** [@qn\_Huynh](https://discourse.slicer.org/u/qn_Huynh)\
**Replies:** 2\
**Last updated:** [July 18, 2026, 2:38am UTC](https://discourse.slicer.org/t/fail-to-compute-results-using-totalsegmentator-returned-non-zero-exist-status-1/47404 "2026-07-18T02:38:40Z")

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Hello Slicer Support! I have been trying to run TotalSegmentator, but it has been failing. The Slicer Error message that I have been receiving states, “… returned non-zero exit status 1.” Traceback (most recent call la…

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## [Island tool inside a segment removes the whole segment](https://discourse.slicer.org/t/island-tool-inside-a-segment-removes-the-whole-segment/47649)

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**Author:** [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Replies:** 5\
**Last updated:** [July 17, 2026, 3:57pm UTC](https://discourse.slicer.org/t/island-tool-inside-a-segment-removes-the-whole-segment/47649 "2026-07-17T15:57:11Z")

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I want to remove these small specs left after a boolean. So I restricted the editable area to inside that specific segment, and then tried to use the island tools remove small islands with really small island size (like …

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## [Problem Downloading Slicer](https://discourse.slicer.org/t/problem-downloading-slicer/47655)

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**Author:** [@kikubamutwe](https://discourse.slicer.org/u/kikubamutwe)\
**Replies:** 1\
**Last updated:** [July 17, 2026, 3:33pm UTC](https://discourse.slicer.org/t/problem-downloading-slicer/47655 "2026-07-17T15:33:21Z")

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I cannot complete the Slicer download. I have tried using multiple connections in multiple countries (using various remote boxes) and each time the download fails partway through. Some of these connections have 1G capac…

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## [Segment Not working](https://discourse.slicer.org/t/segment-not-working/47659)

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**Author:** [@Reza\_ashtiani](https://discourse.slicer.org/u/Reza_ashtiani)\
**Replies:** 0\
**Last updated:** [July 17, 2026, 3:25pm UTC](https://discourse.slicer.org/t/segment-not-working/47659 "2026-07-17T15:25:39Z")

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Dear friends I am new on program. When I want to segment my CBCT, it simply doesn’t work. I’m using CUDA. The first step — loading the DICOM file — works fine, but the dental segmentation process doesn’t proceed be…

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## [Slicer AURs throw CMAKE errors](https://discourse.slicer.org/t/slicer-aurs-throw-cmake-errors/47654)

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**Author:** [@kikubamutwe](https://discourse.slicer.org/u/kikubamutwe)\
**Replies:** 0\
**Last updated:** [July 17, 2026, 1:14pm UTC](https://discourse.slicer.org/t/slicer-aurs-throw-cmake-errors/47654 "2026-07-17T13:14:02Z")

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The AURs listed for Arch in the docs do not work on CachyOS: Getting Started — 3D Slicer documentation They throw CMAKE errors as follows: patching file CMakeLists.txt CMake Error at CMakeLists.txt:25 (CMAKE\_MINIMUM\_RE…

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## [3D Slicer doesn’t start after Windows Install](https://discourse.slicer.org/t/3d-slicer-doesn-t-start-after-windows-install/47482)

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**Author:** [@Randy\_Peterson](https://discourse.slicer.org/u/Randy_Peterson)\
**Replies:** 1\
**Last updated:** [July 17, 2026, 10:12am UTC](https://discourse.slicer.org/t/3d-slicer-doesn-t-start-after-windows-install/47482 "2026-07-17T10:12:48Z")

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3D Slicer doesn’t start after Windows Install. No Error message- just nothing happens. I am using a Lenovo L5 PC, which has the power to run this. I tried: Creating a C:\\slicer folder and installing there. Same issue. …

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## [Is it possible to scroll by dragging the mouse in the current view?](https://discourse.slicer.org/t/is-it-possible-to-scroll-by-dragging-the-mouse-in-the-current-view/35964)

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**Author:** [@ndelgado](https://discourse.slicer.org/u/ndelgado)\
**Replies:** 8\
**Last updated:** [July 15, 2026, 11:02pm UTC](https://discourse.slicer.org/t/is-it-possible-to-scroll-by-dragging-the-mouse-in-the-current-view/35964 "2026-07-15T23:02:57Z")

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Hello, I was wondering if there is a way to use a keyboard shortcut and drag the mouse to scroll through the slices in the current selected view. I know that it is possible to use the shift key and then drag mouse to sc…

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## [A quick/easy method to segment individual muscles ](https://discourse.slicer.org/t/a-quick-easy-method-to-segment-individual-muscles/7963)

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**Author:** [@tsjamo](https://discourse.slicer.org/u/tsjamo)\
**Replies:** 3\
**Last updated:** [July 14, 2026, 7:53pm UTC](https://discourse.slicer.org/t/a-quick-easy-method-to-segment-individual-muscles/7963 "2026-07-14T19:53:25Z")

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Good afternoon. I have MR images from a research study of the human thigh before and after an intervention which induces muscle atrophy. I wish to quantify this atrophy by looking at changes in muscle volume. I have us…

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## [Stereo Off-Axis Projection and Mouse Interactions](https://discourse.slicer.org/t/stereo-off-axis-projection-and-mouse-interactions/47552)

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**Author:** [@LucasP](https://discourse.slicer.org/u/LucasP)\
**Replies:** 4\
**Last updated:** [July 14, 2026, 6:22pm UTC](https://discourse.slicer.org/t/stereo-off-axis-projection-and-mouse-interactions/47552 "2026-07-14T18:22:48Z")

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:robot: This post was written with AI assistance. But I’m still human Hi, I’m new to 3D Slicer and VTK. I am trying to build a “virtual window” effect using a custom stereo display that gives me real-time viewDistanc…

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## [Abdominal Muscle Segmentation any better ways to approach this?](https://discourse.slicer.org/t/abdominal-muscle-segmentation-any-better-ways-to-approach-this/46206)

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**Author:** [@CS1](https://discourse.slicer.org/u/CS1)\
**Replies:** 3\
**Last updated:** [July 14, 2026, 4:00pm UTC](https://discourse.slicer.org/t/abdominal-muscle-segmentation-any-better-ways-to-approach-this/46206 "2026-07-14T16:00:34Z")

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Hello there, I’ve been using total segmentator, 3D slicer for the past few months trying to get the volumetric data for body composition of the lumbar region. I have to say that it is a great resource and gives you a de…

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## [Muscle Segmentation without Organ](https://discourse.slicer.org/t/muscle-segmentation-without-organ/40695)

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**Author:** [@kwonheokju](https://discourse.slicer.org/u/kwonheokju)\
**Replies:** 1\
**Last updated:** [July 14, 2026, 3:58pm UTC](https://discourse.slicer.org/t/muscle-segmentation-without-organ/40695 "2026-07-14T15:58:12Z")

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Hi, I’m a student who uses a 3D Slicer. I’m splitting certain muscles. But it takes too long to split this up. I’ve tried Volume Rendering, but it doesn’t seem to fix it here. And even if it does, it’s difficult. Set…

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## [Muscle segmentation](https://discourse.slicer.org/t/muscle-segmentation/6197)

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**Author:** [@Melodicpinpon](https://discourse.slicer.org/u/Melodicpinpon)\
**Replies:** 5\
**Last updated:** [July 14, 2026, 3:55pm UTC](https://discourse.slicer.org/t/muscle-segmentation/6197 "2026-07-14T15:55:55Z")

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Good evening gentlemen, I would like to get a visualisation / segmentation of isolated muscles. Which method do you recommend? The purpose is to get the general volume of each of the muscles to create a 2D drawings of…

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## [Extract slice view rotations? (For applying to crop volume ROI)](https://discourse.slicer.org/t/extract-slice-view-rotations-for-applying-to-crop-volume-roi/47607)

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**Author:** [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Replies:** 1\
**Last updated:** [July 13, 2026, 5:01pm UTC](https://discourse.slicer.org/t/extract-slice-view-rotations-for-applying-to-crop-volume-roi/47607 "2026-07-13T17:01:21Z")

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Is there a way to extract the rotation transform of slice views rotated using ctrl-alt-left-click-and-drag? It would be super handy to be able to take that and paste it into a transform to apply to a crop volume ROI. It’…

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## [Write 3D model to CT images](https://discourse.slicer.org/t/write-3d-model-to-ct-images/47587)

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**Author:** [@KarelPenicka](https://discourse.slicer.org/u/KarelPenicka)\
**Replies:** 3\
**Last updated:** [July 13, 2026, 11:13am UTC](https://discourse.slicer.org/t/write-3d-model-to-ct-images/47587 "2026-07-13T11:13:03Z")

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Hello gentlemen. I have a 3D model of a mirrored healthy femur proximally aligned to the operated femur. In the 3D slicer I can see the difference and how they are superimposed. But I would like to write the 3D model int…

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## [Converting Radial Artery from DICOM ( CT files) and Segmentation using slicer manually and using slicer AI 3d segmentation for simulation](https://discourse.slicer.org/t/converting-radial-artery-from-dicom-ct-files-and-segmentation-using-slicer-manually-and-using-slicer-ai-3d-segmentation-for-simulation/47603)

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**Author:** [@Chandana](https://discourse.slicer.org/u/Chandana)\
**Replies:** 0\
**Last updated:** [July 13, 2026, 3:22am UTC](https://discourse.slicer.org/t/converting-radial-artery-from-dicom-ct-files-and-segmentation-using-slicer-manually-and-using-slicer-ai-3d-segmentation-for-simulation/47603 "2026-07-13T03:22:57Z")

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Operating system: Windows 11 Slicer version: 5.9 Expected behavior: clear radial artery stl Actual behavior: unclear lump with bone

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## [Smallest specimen possible to image with Slicer Photogrammetry?](https://discourse.slicer.org/t/smallest-specimen-possible-to-image-with-slicer-photogrammetry/47522)

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**Author:** [@imfeldts001](https://discourse.slicer.org/u/imfeldts001)\
**Replies:** 5\
**Last updated:** [July 10, 2026, 5:38pm UTC](https://discourse.slicer.org/t/smallest-specimen-possible-to-image-with-slicer-photogrammetry/47522 "2026-07-10T17:38:57Z")

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Greetings! My students and I have begun a project using Slicer Photogrammetry to create 3D models of songbird skulls from natural history collection in the area. The platform has worked well for us with the largest spec…

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